Wanted to get a few opinions from some hard core guys here on mud . I'm running an fj40 leaf sprung w a wb of 106" .It has poly rear axles ,Longs ,six shooters ,hub gears ,studs blah blah in the front .Running a FI 2F w/sm420 and 4.88's. I have a set of brand new 36" iroks on beadlocks and also have the opportunity to pick up a set of 39.5" iroks which would also be mounted on beadlocks . I'm entered in a local comp called The Island Cup . The terrain is pretty mixed ,Lots of rock sometimes covered w/moss but most likely wet (lots of right foot tire spinning type stuff). My question is , should I run the 36's (actually taller than a 37) and risk less breakage . Or get the 39.5's for the obvious advantages ? It is a three day event so staying in the game w/less breakage might be the way to go.